Venting requirements
f’ fI Aib
Fire Hazard
Venting system must terminate to the outside.
Do Not vent exhaust air into spaces within walls or ceilings or into attics, crawl spaces or garages.
Use metal duct only.
Do Not use
Do Not use plastic ductwork.
Flexible metal duct is Not recommended. If it is used, calculate each foot of flexible metal duct as two feet of straight duct. Flexible metal elbows count twice as much as standard elbows.
Do Not use to exhaust hazardous or explosive materials and vapors.
Failure to follow these instructions could result in a fire.
Ductwork needed for insfallofion is not included. Wall or roof caps used must have backdrafl damper.
Determine which outside venting method needs to be used NOTE: If a
(recirculating) installation is desired, follow instructions on Panel D.
The length of the ductwork and number of elbows should be kept to a minimum to provide efficient performance. The size of the ductwork should be uniform. Do Not install two elbows together. Use duct tape to seal all joints in the ductwork system. Ductwork can terminate either through the roof or wall. Use caulking to seal exterior wall or roof opening around exhaust hood. For the most efficient and quiet operation, it
is recommended that the range be vented vertically through the roof through 7” round ductwork.
Figures
Vertical Roof Venting
roof cap
7” round through t roof
damper locatec?- as far from hood as possible
Horizontal Wall Venting
I cap
Figure 3 A
7” min. | diameter |
|
|
|
|
|
round ductwork |
|
|
|
|
| |
| . *I... |
| wall cap | |||
elbow |
| : |
| .: | ||
|
|
| I | I*\ |
| J |
10” to round | ‘.{ | I | I | l t | l\ | |
| a. |
| ||||
ductwork | transition |
|
|
| ||
|
|
|
Figure 4
Recommended ductwork length
Use
3- l/4” x 10” ductwork system
3 - 114” x 10” H- |
| 6 ft. |
|
|
|
| |
elbow |
|
|
|
|
|
| |
| wall cap | ||||||
= 265ftfeet | |||||||
u | 8 feet | straight | = | 8ft. | |||
1 - | wall | cap | = | Oft. | |||
| |||||||
| Length |
| of | = | 13 ft. | ||
| 3- l/4” | x | 10” system |
Recommended standard fittings
elbow = 5 ft. | elbow = 12 ft. | cap=oft. |
Now start...
With range hood in kitchen.
Slide cardboard or hardboard under range before moving range across floor to prevent damaging floor covering.
Cover countertop, cooktop or
I 1 Put on safety glasses and gloves.
2 n Disconnect and move freestanding range from cabinet opening to provide easier access to upper cabinet and rear wall. Put a thick, protective covering over cooktop,
3 H Determine which venting method (roof or wall venting or
If
Vented installation
vent baffle
.‘Q:,
F
4 W Remove screws from vent baffle on top of range hood. Remove vent baffle.
in
top of range hood so that the word “Vented” is facing up. Fasten vent baffle with screws.
7” ductwork system
knockouts
6 n Remove knockout from the wiring opening (top or rear) to be used.
Figure 1
Vertical Roof Venting
ro/f cap
Figure 2
/ | Maximum | length | = 26 feel | ||||
to 7” | 1 | - | transition | = | 4,5 | ft | |
transition | |||||||
| 2 | - | 90” | elbows | =lO |
| ft. |
| 8 | feet straight | = | 8 | ft. | ||
| 1 - | wall | cap | = | 0 | ft. |
Length of 7” system = 22.5 ft
Recommended standard fittings
7” to | ||
7” = 4.5 ft. | 90” elbow = 5 ft. | 90” elbow = 9 ft. |
90” elbow = | 7” to | ;“,“;lbow = I’;wtizll cap | |
5 ft. | xlO”=lft. | . | . |
For rectangular venting, remove only the
For round ductwork venting through roof, remove both opening knockouts.
terminal box
n Remove terminal box cover from range hood
Panel B